Complete Guide to Dishwasher Safe Symbols

Almost everyone has at least one dishwasher in their kitchen. And almost everyone wants their dishes to come out sparkling clean, right? Well, if you’re like most people, you probably rely on a few standard symbols to indicate whether or not a dish can go in the dishwasher. But are these symbols really safe for your dishes? In this blog post, we will explore everything you need to know about these symbols and whether or not they’re truly safe for use in your kitchen. From materials used to processing techniques, read on to learn everything you need to know about this popular symbol.

What Are the Dishwasher Safe Symbols?

A dishwasher safe symbol is a graphic design or lettering convention used on products that can be placed in the top rack of a dishwasher to indicate that they are safe for use in the machine. The graphic design typically includes three horizontal lines across a blue background and is often accompanied by the words “Dishwasher Safe.”

Why do we use them?

The use of a dishwasher safe symbol on products can help to ensure that those products are actually cleaning properly in the dishwasher. By marking them as being safe for use, users know that any food or soil on the product will not cause any damage to their machines.

There are a few symbols that designate whether a dishwasher safe item is safe for use in the dishwasher. These include the following:

S – This symbol indicates that an object is both dishwasher safe and microwave safe.

NS – This symbol indicates that an object is not suitable for the dishwasher or the microwave.

P – This symbol warns consumers not to put delicate items in their dishwashers, as they may be harmed by high temperatures and vibrations.

What Do the Different Symbols Mean?

What Do the Different Symbols Mean

Dishwasher safe labels indicate that a dish or pot can be placed in the dishwasher without fear of damaging it. These symbols are generally found on food and beverage containers, kitchenware, and other items you might want to put in the dishwasher.

The three primary symbols used on dishwashing equipment are the triangle with a “D” inside it, the diamond with a “D” inside it, and the circular symbol with a crosshair in it. The triangle indicates that the object is safe for direct exposure to water jets; the diamond means that the object is safe for indirect exposure to water jets; and the crosshair means that the object is both safe for direct and indirect exposure to water jets.

How To Use the Dishwasher Safe Symbols on Your Dishes

If you’re familiar with the dishwasher safe symbols on your dishes, you’ll know that there are different versions for different types of food. Here’s a guide to using them all:

For plastics and non-stick cookware: The no-rinse symbol means that the item can be safely washed in the dishwasher without rinsing.

For glasses and other fragile items: The triangle with an “x” inside means that the item should only be placed in the top rack of the dishwasher and should not be touched by water or sharp objects.

For dishes containing raw meat, poultry, seafood, eggs or dairy: The red cross with a circle means that these items should not be placed in the dishwasher at all. Instead, they should be hand washed with soap and cold water.

The benefits of using them

The benefits of using dishwasher safe symbols

Some dishwasher safe symbols are easy to remember and can help avoid dangerous chemical reactions in your dishwasher. By using these symbols, you can ensure that your dishes come out clean and safe.

The dishwasher safe symbol for calcium is a small triangle with a line running through it. This indicates that the dishwashing liquid should not contain calcium. It can create dangerous chemical reactions in the dishwasher, leading to spots on dishes or even fire.

The dishwasher safe symbol for chlorine is a green triangle with a line running through it. The chlorine in washing detergent can cause damage to dishes if it is not diluted properly. Overuse of chlorine can also cause unpleasant odors and leaves dishes feeling dry and gritty.

The dishwasher safe symbol for iron is an orange triangle with a line running through it. Iron can cause steel pots and pans to rust inside the dishwasher, which could lead to leaks or other problems down the road. Occasionally using an iron-containing detergent will not harm dishes, but overuse of this type of detergent can lead to damage over time.

What Are The Most Important Rules When Using a Dishwasher?

Important Rules When Using a Dishwasher

When using a dishwasher, there are a few important rules to follow to ensure your dishes come out clean and without any damage. First and foremost, always read the manufacturer’s instructions before starting the wash cycle. This will help you avoid any potential accidents or mishaps.

Another key guideline is to make sure all your dishes are properly cleaned and dried before putting them in the dishwasher. Dirty dishes can cause build-up that can lead to clogs and other problems with the dishwasher. Finally, be sure to empty and dry the dishwasher’s racks after each use to prevent water from collecting and causing corrosion.

Does Dishwasher Safe Mean Microwave Safe?

There is no definitive answer to this question as it depends on the dishwasher and microwave. Generally speaking, dishes that are safe to put in a dishwasher will also be safe to put in a microwave, but it’s always best to check with the manufacturer. Some dishwashers are specifically designed not to heat up food in the oven-like chamber, so those items might not be safe to cook in a microwave.


It’s no secret that dishware is one of the most-used items in a household, so it’s important to keep it clean and free from bacteria. We hope this guide helped you cover all the basics on how to keep your dishes clean and safe from food poisoning.